this SCP is a simple one-sided domino with the numbers 4 and 5
when toppled the SCP will begin a cycle that eventually leads to a disastrous event e.g: 911 hiroshima
a lot of the SCP will be testing logs where the foundation causes cataclysmic events around the world.

Not trying to criticise your comment or the idea, as I am a newbie. But I think that margssentif means that his SCP will start a butterfly effect, where a small thing (in this case the domino toppling) leads to another, then another, so on and so on, until the "small thing" snowballs into a cataclysmic event.

Again, not criticising anything, just helping resolve a possible miss-understanding.